The Impact of Partial Replacement of the Cement in Concrete with Oyster Shell Ash and Marble Powder

One of the materials that is most frequently utilized in the building industry is concrete. Sand, cement, water, and aggregate make up the majority of the materials in concrete mix. River sand and regular Portland cement are typically utilized as fine aggregate and cement in concrete mixes. Because excessive river sand excavation is causing river beds to erode and fail, which is turning into a major environmental problem, oyster shell ash and marble powder are being used in place of cement to solve this problem. The main goal of this study was to create a high-performance concrete by substituting oyster shell for cement and experimenting to measure the impact of the shell on the concrete. This experiment is to be carried out using several tests which include initial tests for cement, fine aggregate and coarse aggregate, workability, compressive, tensile and flexural test etc.